Main Page | See live article | Alphabetical index Surround Sound is the concept of expanding the spatial imaging of audio playback from 1-dimension (mono/Left-Right) to 2D or 3D. This is often performed for a more realistic audio environment, actively implemented in cinema sound systems, technical theatre, home entertainment, video arcades, computer gaming, and a growing number of other applications. Many popular surround sound formats have evolved over the years. They include ambisonics, quadraphonic, Dolby 5.1 Surround Sound, and DTS. There are methods of using 1-dimensional (stereo) output to emulate a surround environment. Emulation Methods QSound Dolby Pro Logic Surround sound is not limited to placement of speakers along a flat plane. Vertically-located audio sources can be considered. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.